Polkadot

Polkadot connects heterogeneous blockchains under a shared security umbrella via its relay chain.Polkadot 通过其中继链，在共享安全伞下连接异构区块链。

Polkadot's parachain model differs from Cosmos in that all connected chains share a common validator set.Polkadot 的平行链模型与 Cosmos 的不同之处在于，所有连接的链都共享一个共同的验证者集合。